This large (10.5 x 1.5 x 6.75) pouch was designed to fit a 1.5 liter (50 ounce) hydration bladder. It can be attached to any MOLLE compatible platform. It comes with three rows of external MOLLE compatible webbing on the outside as well as on the sides. In addition, the Hydration Pouch comes with two Anchor Straps for use with the back of a two piece vest.